Systems and Methods for Generating Secure Tags

1. A method for tracking a physical or digital product or document, comprising labeling the physical or digital product or document with a computer-readable secure tracking tag generated by selecting tag feature options based on a combination of numeric data and a stylesheet that specifies selectable tag feature options within the secure tracking tag.

2. The method of claim 1, wherein the tag feature options include a presence or absence of a tag feature at a position on the computer-readable secure tracking tag, the position specified by the combination of the numeric data and the stylesheet.

3. The method of claim 1, wherein the tag feature options include a size, color, or shape of a tag feature of the computer-readable secure tracking tag.

4. The method of claim 1, wherein the tag feature options include a deviation from a position, the position specified by the combination of the numeric data and the stylesheet.

5. The method of claim 1, wherein the tag feature options include a number of tag features present at a position, the position specified by the combination of the numeric data and the stylesheet.

6. The method of claim 1, wherein the tag feature options include a presence of spline encoding on a tag feature of the computer-readable secure tracking tag.

7. The method of claim 6, wherein the spline encoding comprises a tag feature edge extending a varying distance from a reference point or line.

8. The method of claim 7, wherein the varying distance encodes one or more spatially multiplexed portions of the numeric data.

9. The method of claim 8, wherein the varying distance encodes repeats of the one or more spatially multiplexed portions of the numeric data.

10. The method of claim 1, wherein the tag feature options include a presence of microstructures on a tag feature of the computer-readable secure tracking tag.

11. The method of claim 1, wherein tag features of the computer-readable secure tracking tag include rims and tag feature options for the rims include rim breaks, rim deformations, and rim connections.

12. The method of claim 1, wherein tag features of the computer-readable secure tracking tag include rim breaks and tag feature options for the rim breaks include rim break edge shapes.

13. The method of claim 1, wherein tag features of the computer-readable secure tracking tag include connections between predetermined types of the tag features and tag feature options for the connections include connection width and connection asymmetry.

14. The method of claim 1, wherein tag features of the computer-readable secure tracking tag include connections between existing tag features of the computer-readable secure tracking tag and tag feature options for the connections include connection width and connection asymmetry.

15. The method of claim 1, wherein tag features of the computer-readable secure tracking tag include a center logo and tag feature options include a displacement of the center logo from a center point of the secure tag.

16. The method of claim 1, wherein the method further comprises generating the computer-readable secure tracking tag.

17. The method of claim 16, wherein generating the computer-readable secure tracking tag comprises selecting first tag feature options according to a first subset of the numeric data, the selection of the first tag feature options enabling second tag feature options, and selecting the second tag feature options according to a second subset of the numeric data.

18. The method of claim 17, wherein the first tag feature options comprise a presence or absence of points, the second tag feature options comprise a presence or absence of connections between points present according to the first subset of the numeric data, and third tag feature options encoding a third subset of the numeric data comprise widths of each of the connections present according to the second subset of the numeric data.

19. The method of claim 1, wherein the computer-readable secure tracking tag comprises a vector graphics file and labeling the physical or digital product or document with the computer-readable secure tracking tag comprises rasterizing the vector graphics file.

20. The method of claim 1, wherein the method further comprises providing identification information for the computer-readable secure tracking tag to an authentication server.

21. The method of claim 20, wherein the method further comprises generating a hash of the computer-readable secure tracking tag and checking the hash for collisions with hashes of other computer-readable secure tracking tags before providing the identification information to the authentication server.